diff --git a/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java b/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
index d10c7fb..81b7bd0 100644
--- a/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
+++ b/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
@@ -51,7 +51,6 @@ import org.springframework.stereotype.Service;
 import javax.sdp.Connection;
 import javax.sdp.SdpFactory;
 import javax.sdp.TimeDescription;
-import javax.sip.ListeningPoint;
 import javax.sip.header.CallIdHeader;
 import javax.sip.message.Request;
 import javax.sip.message.Response;
@@ -221,18 +220,24 @@ public class Gb28181DownloadService {
         timeField.setStartTime(start);
         timeField.setStopTime(end);
         TimeDescription timeDescription = SdpFactory.getInstance().createTimeDescription(timeField);
-        GB28181Description gb28181Description = MediaSdpHelper.build(MediaSdpHelper.Action.DOWNLOAD, gbDeviceId, channel, Connection.IP4, ip, port, ssrc, streamMode, timeDescription);
-        gb28181Description.setSessionName(SdpFactory.getInstance().createSessionName(MediaSdpHelper.Action.DOWNLOAD.getAction()));
+        MediaSdpHelper.Action action = MediaSdpHelper.Action.DOWNLOAD;
+        if(proxySipConfig.isUsePlaybackToDownload()){
+            action = MediaSdpHelper.Action.PLAY_BACK;
+        }
+        GB28181Description gb28181Description = MediaSdpHelper.build(action, gbDeviceId, channel, Connection.IP4, ip, port, ssrc, streamMode, timeDescription);
+        gb28181Description.setSessionName(SdpFactory.getInstance().createSessionName(action.getAction()));
         gb28181Description.setTimeDescriptions(new Vector<>(){{add(timeDescription);}});
         MediaDescriptionImpl media = (MediaDescriptionImpl) gb28181Description.getMediaDescriptions(true).get(0);
         if(proxySipConfig.getStreamMode() != StreamMode.UDP){
             media.getMedia().setProtocol("RTP/AVP/TCP");
         }
-        media.setAttribute("downloadspeed", String.valueOf(4));
+        if(!proxySipConfig.isUsePlaybackToDownload()){
+            media.setAttribute("downloadspeed", String.valueOf(4));
+        }
         URIField uriField = new URIField();
         uriField.setURI(StringUtils.joinWith(":", channel, "0"));
         gb28181Description.setURI(uriField);
-        sender.sendRequest(inviteRequest(docking, device, gb28181Description, MediaSdpHelper.Action.DOWNLOAD, ssrc, streamId, result, time));
+        sender.sendRequest(inviteRequest(docking, device, gb28181Description, action, ssrc, streamId, result, time));
         return result;
     }